Control apparatus for radiographic system
a control apparatus and radiographic technology, applied in the field of radiographic systems, can solve the problems of difficult control of imaging apparatuses compared to the case of the same imaging apparatus, and achieve the effect of improving the long-term imag
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example 1
[0075]A method for controlling timing to start accumulation in each apparatus in the present example will be described.
[0076]FIG. 7 is a time chart for controlling, when two cassettes whose preparatory periods are different from each other are used, timing to start accumulation of image signals of the cassettes.
[0077]The control apparatus 104 stores information of preparatory periods and accumulation periods of the cassetteA 102a and the cassetteB 102b. In another embodiment, the information can be held by the radiation generation apparatus 100. It is assumed that a preparatory period A of the cassetteA 102a is 200 msec and a preparatory period B of the cassetteB 102b is 500 msec, a difference D between the preparatory periods of the cassettes is 300 msec, and an accumulation period S is 1 sec in common. An X-ray exposure period T is 800 msec.
[0078]First, before imaging, the control apparatus 104 notifies each of the cassettes 102 of imaging information, such as the X-ray exposure p...
example 2
[0082]FIG. 8 is a time chart for extending an accumulation period of one of the cassetteA 102a and the cassetteB 102b when imaging is performed using the cassetteA 102a and the cassetteB 102b. The present example is similar to Example 1 except that the accumulation period of the cassetteA 102a, whose preparatory period is short, is extended.
[0083]First, before imaging, the control apparatus 104 notifies each of the cassettes of imaging information, such as the X-ray exposure period T and the accumulation period S, based on the imaging order.
[0084]The control apparatus 104 calculates the difference D (=B−A) to be extended from the preparatory period information (the preparatory period A and the preparatory period B longer than A) of each of the cassettes, which is stored, and selects a cassette (the cassetteA 102a in the present example) to which the difference D is to be notified. The accumulation period to be extended is not limited to the difference D and can be set to any period ...
example 3
[0086]FIG. 9 is a time chart for extending an accumulation period of at least one of the cassetteA 102a and the cassetteB 102b until an exposure stop signal is received, when imaging is performed using the cassetteA 102a and the cassetteB 102b. The present example is similar to previous examples, except that the accumulation period of the cassetteA 102a, whose preparatory period is short, ends by the exposure stop signal.
[0087]First, before imaging, the control apparatus 104 notifies each of the cassettes 102 of accumulation period information such as the X-ray exposure period T and an accumulation end condition based on the imaging order. In the long length imaging, such notification leads to switching control of at least a cassette whose preparatory operation is short to control to end accumulation by the exposure stop signal, while the accumulation end is managed in a predetermined period in normal imaging using one cassette. In the present example, control of all the cassettes 1...
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